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CVE-2026-10773

The DHCPv4 client helper net_dhcpv4_msg_type_name() in subsys/net/lib/dhcpv4/dhcpv4.c indexes a static 8-element const char * name table after a faulty bounds check. The guard used msg_type <= sizeof(name) instead of msg_type <= ARRAY_SIZE(name); sizeof returns the byte size of the pointer array (32 on 32-bit, 64 on 64-bit targets) rather than the element count of 8, so message-type values from 9 up to that byte size pass the check and cause name[msg_type - 1] to read past the end of the array.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:1cb1de26068d488d1e31a87789cb39a1434bd01d498219e3cdfd5330d5d6487d
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-682","description":"bounds","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:d37b0e0ec564f8d1937a5c7feec5b61a2f8039444b29531976afae13529ab089 · sha256:934f02a6111f802d… · /containers/cna/problemTypes/0/descriptions/1

{"cweId":"CWE-125","description":"bounds","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:d37b0e0ec564f8d1937a5c7feec5b61a2f8039444b29531976afae13529ab089 · sha256:934f02a6111f802d… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"collectionURL":"https://github.com/zephyrproject-rtos/zephyr","defaultStatus":"unaffected","packageName":"zephyr","product":"zephyr","programFiles":["subsys/net/lib/dhcpv4/dhcpv4.c","subsys/net/lib/dhcpv6/dhcpv6.c"],"vendor":"zephyrproject","versions":[{"lessThan":"4.5.0","status":"affected","version":"1.7.0","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:d37b0e0ec564f8d1937a5c7feec5b61a2f8039444b29531976afae13529ab089 · sha256:934f02a6111f802d… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"baseScore":5.4,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:d37b0e0ec564f8d1937a5c7feec5b61a2f8039444b29531976afae13529ab089 · sha256:934f02a6111f802d… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-682","description":"bounds","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:d37b0e0ec564f8d1937a5c7feec5b61a2f8039444b29531976afae13529ab089 · sha256:934f02a6111f802d… · /containers/cna/problemTypes/0/descriptions/1
{"cweId":"CWE-125","description":"bounds","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:d37b0e0ec564f8d1937a5c7feec5b61a2f8039444b29531976afae13529ab089 · sha256:934f02a6111f802d… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"name":"Fix commit","tags":["patch"],"url":"https://github.com/zephyrproject-rtos/zephyr/commit/73c8a7df4f00088fc04ee5ab71bcabf47fcd3db7"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d37b0e0ec564f8d1937a5c7feec5b61a2f8039444b29531976afae13529ab089 · sha256:934f02a6111f802d… · /containers/cna/references/0
{"name":"GHSA-r5hq-xq42-wcfq","url":"https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-r5hq-xq42-wcfq"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d37b0e0ec564f8d1937a5c7feec5b61a2f8039444b29531976afae13529ab089 · sha256:934f02a6111f802d… · /containers/cna/references/1
{"tags":["exploit"],"url":"https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-r5hq-xq42-wcfq"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d37b0e0ec564f8d1937a5c7feec5b61a2f8039444b29531976afae13529ab089 · sha256:934f02a6111f802d… · /containers/adp/0/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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